PLUNGER 1S2121 - Caterpillar

Engine3508C (S/N: PXA1-UP; PXB1-UP; TTM1-UP; TTP1-UP)3512B (S/N: ED21-UP; SRH1-UP)3512C (S/N: BG21-UP; BM21-UP; DE21-UP; MB21-UP; RL21-UP; SB21-UP; 2A21-UP; MB31-UP; TT41-UP; TT51-UP; DPB1-UP; DPC1-UP; PXC1-UP; PXE1-UP; PXF1-UP; PXG1-UP; EWJ1-UP; MXN1-UP; MXP1-UP; T3P1-UP; TKP1-UP; T3R1-UP; T3S1-UP; MNW1-UP; PXW1-UP; T3W1-UP; TTW1-UP; PXX1-UP; TTX1-UP; T3Y1-UP)3512E (S/N: MR21-UP; MD31-UP; MR31-UP; MR41-UP; MR71-UP; MR81-UP)3516C (S/N: BS21-UP; ML21-UP; BG31-UP; ML31-UP; FT61-UP; TT61-UP; TT71-UP; DPD1-UP; PXD1-UP; PXH1-UP; PXJ1-UP; TTJ1-UP; TKR1-UP; TKS1-UP; MXT1-UP; TKT1-UP; FLW1-UP; TKX1-UP; TKY1-UP; TTY1-UP; PXZ1-UP; TTZ1-UP)3516E (S/N: MD51-UP; MR91-UP; MRC1-UP; MRN1-UP; MRY1-UP)The new leak detection tool is used to test for leaks in intake systems, turbocharger systems, and exhaust systems.The leak detection tool should be used to identify the leak source and the root cause part or parts causing the leak. The leak detection tool will help prevent misdiagnosis, and can be used to confirm repairs.Refer to Special Instruction, "Best Practices for Exhaust Components Installation For Certain 3512C and 3516C Marine Engines"M0072188 to ensure that the exhaust systems are assembled correctly.The following changes are now available for the products within the listed serial numbers.The new part number is listed in Table 1.
Table 1
New Part Number Part Name
533-1177 Leak Detector